Brake for vehicles.



W. U. COOPER.

BRAKE FOE VEEIOLES.

APPLIOLTIOH FILED JUL! 17,l01l.

Patented 0011.8, 1912.

I BHEiITl-BHEET 1.

ML f- GMHMA mum 0-. IAINIPNNN' l G- W. C. COOPER. BRAKE FOR VEHICLES.

APPLICATION FILED JULY 17,1911.

1,040Q51 5; Patented Oct. 8, 1912.

2 SHEETS-SHEET 2.

WILTLIAli/l G. COOPER, 0F SPRINGFIELD, ILLINQIS.

BRAKE F03 VEHICLES.

" oa ers.

Specification of Lettersjlfiatent.

Patented Get. 8, 1932.

Application filed 31 3317, 1911. Serial No. 838,953.

T 0 all whom it may concern:

I Be it known that l, lVILLIAM C. COOPER, a citizen of the United States, residing at Springfield, in the county ofifiangamon and State of Illinois, have invented a certain new v and useful Brake for vehiclegiof which the following is. a specificatign. f

i The principal object is to provide a comparatively simple, inexpensive, and 'reliable,'

.auxiliary or emergency 3 brake for motor vehicles.

Another object is to provide a brake of the type recited the braking elements 'whereof respond instanter to the application or removal-cf pressure.

' Another object is to provide braking ele- .ments' that are self-locking and which look and release interdependently.

Other objects, as well as the nature, characteristic features, and scope of the invention, will be readily understood. from the following description taken in connection with the accompanying drawings forming a part-hereof, which illustrate'merely by way of example, an embodimentoi the invention in an automobile brake.

Figure l, is a top view of the running gear, showing one of the various ways of embodying the invention. Fig. 2', is a sectional view of the brake drum and brake shoes. Fig. 3, is a detail,'illustrating more particularly the gear segment for coupling the complemental clamps or shoes. Figs. l and 5, illustrate different positions of the clamps and actuating levers, the former when the drum is running free, the latter when the drum is locked. Fig. 6, illustrates a varied form in which the shoes bind or clamp the drum at a point in. rear of the driving axle.

The brake drum 5, or its equivalent, is mounted in any suitable manner so as to rotate with the driving axle 6. The brake shoes 7 and 8 are mounted so as to be brought into or out of engagement with the inner and outer walls of theperiphery 'oi the drum.

The system of control for efi'ecting the looking or release since it depends in a measure upon the design orst-yle of the car is not directly concerned here and will only be referred to at large. Suffice it to say that the structure, arrangement, and operation the braking elements are so comparatively simple and their action so positive that it a matter of choice whether the same be controlled by hand or foot. Fig. 1, shows two sets of braking devices, but asprevionsly explained this is by wayof illustration only and whether or not the brakes arexluplieated will depend upon certain conditions, sit 5h as the power and size of the -ear.

The inner and outer clamps or brake shoes 7 and 8 are substantiallycomplements one of the other. They are in the form of sectors with a bearing or clamping surface 9, and with a segmental gear 10, to one side thereof "and formed integral with the sector body.

The gears 10, interinesh so that a movement of one shoe efiects a movement of the other. The bearing or clamping surfaces 9, of the respective shoes are eccentric to the axes of rotation or partial rotation of the shoes so that the farther they advance the more their binding action upon the brake drum is accelerated. The shoes are carriedlby pivotal arms 11, 12, whose movements are controlled by a brakeactustor 13 of any suitable type, as before explained. Obviously a move ment of the parts in one direction inn lock the drum and a reverse movement will release it.

In Figs. 4 and 5, the braking elements or shoes 7 and 8, are illustrated as being located above and substantially in line with the axle. Fig. 6, illustrates a variation, wherein the shoes 1% and 1 5 are located in rear of and in the plane of the axle, but the principle is the same.

It will be obvious to those skilled in he art to which the invention relates that modifieations may be made in details without do parting-from the spirit and scope of the invention. Hence the same is not limited other than required by the state of the art.

ing segmental gears, and suitable actuating mechanism.

2'. In combination a brake drum, inner and outer shoes-having eccentric bearing or friction surfaces, said shoes being in the form of sectors provided edgewise with intermeshing teeth whereby the shoes ale mutually responsive, and suitable actuating mechanism. In testimony whereof I have hereunto signed my name in the presence of two sub-, scribing Witnesses.

7, WILLIAM C. COOPER. Witnesses:

J. V. FORTHMAN, CHAs. O. MILLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C." 

